I was in Dachau and Belsen. I saw chambers where hundreds of Jews were put to death every day. … I saw the gallows in Belsen where Jews were hanged each Jewish holy day, while the rest were paraded to witness the ghastly punishments of men who had perhaps come a few minutes late to their daily grind. … It is beyond mortal power to bring back to life six million who were burned, asphyxiated and buried alive by the Nazis. But our six million brothers and sisters who went to their deaths have bequeathed us a sacred injunction: to prevent such a disaster overtaking the Jewish peoples in the future and to do so by the Jewish people being an independent people in its own land, capable of resisting any foe or enemy by its own strength.

Letter to an unnamed American friend, as quoted in David Ben-Gurion, in His Own Words (1969) edited by Amram M. Ducovny, p. 57 - 60; similar remarks appeared in an address at Hebrew University (28 November 1945)